@media (max-width:768px) {

    /* 头部导航栏 */
    .h {
        width: 100%;
    }
    /* .des .peo {
        width: 100%;
    }
    .des .more {
        width: 100%;
    } */
    .header .h{
        z-index: 10;
        background-color: #fff;
        position: fixed;
        height: 50px;
    }
    .header .logo {
        margin-left: 15px;
    }
    .header .nav {
        display: none;
        z-index: 10;
    }
    .header .logo {
        float: left;
    }
    .header .logo .ver img {
        /* display: block; */
        width: 89px;
    }
    .header .logo .history img {
        width: 24px;
        display: block;
        margin: 0 auto;
        margin-top: -6px;
    }
    .header .menu-line {
        float: right;
        width: 40px;
        height: 40px;
        margin-right: 15px;
        vertical-align: middle;
        margin-top: 15px;
        transition: .3s linear;
    }
    .header .line {
        width: 30px;
        height: 2px;
        background-color: #000;
        margin-top: 5px;
    }
    .header .line:nth-child(1) {
        margin-top: 13px;
    }
    .active .line {
        transition: .3s linear;
    }
    .active .line:nth-child(1) {
        transform: translateY(7px);
    }
    .active .line:nth-child(2) {
        width: 0;
    }
    .active .line:nth-child(3) {
        transform: translateY(-7px) rotate(90deg);
    }
    .active {
        transform: rotate(45deg);
        transition-delay: .3s;
    }
    .close .line {
        transition: .3s linear;
    }
    .header .nav {
        height: calc(100vh - 80px)!important;
        background: rgba(0, 0, 0, 0.8);
        position: fixed;
        top: 80px;
        left: 0;
        width: 100%;
        margin-top: 0;
        padding-left: 0;
        display: flex;
        flex-direction: column;
        justify-content: space-around;
        display: none;
    }
    .nav-item {
        width: 100%;
        height: 15%;
        text-align: center;
    }
    .nav-item a {
        font-weight: bolder;
        color: #fff;
    }
}